Homebrew_PCBs

> Andrew V wrote:
> <SNIP>
> The other problem I have encountered when I
> tried (note tried, but not succeeded) to etch
> into solid backgrounds with TT is that the
> depth needed seemed to be more than the
> method would withstand.
> <SNIP>

These where done with TT (pulsar+TRF)

http://www.instructables.com/file/F6S25EMH742SAKC#step22

That is 0.35mm depth of etch on those fingers.

I am sure a dial does no need to etch that deep.